Shingle-sawinq machine



(No Model.) 4 Sheets$heet 1.

F. M. HANK-S 8; H. N. SIBLEY.

SHINGLE SAWING MACHINE.

No. 355,077. Patented Dec. 28, 1886.

lay

INVENTOR aac/mz 7 WITNESSES:

N. PETERS. Phnlo-Lhhngrxpher. Wanhingtnn, D. C.

(No Model.)

. 4 Sheei'.s--'Shqet 2* P. M. HA-NKS 8611'. N. SIBLEY.

- SHINGLE SAWI'NG MAGHINE.

WITNESSES: W /Z ATTORNEYS.

N PETERS FholoLilhognphnr. Wanhingian. D. C.

(No Model.) 4 Shets-$heet 3.

P. M. BANKS & H. N. SIBLEY.

SHINGLE SAWING MACHINE.

No. 355,077. Patent-ed Dec. 28,1886.

WITNESSES INVENTOR ATTORNEYS.

N. PETERS PhnloLilhngrapher, Wzshinglon. D. I;

UNITED STATES PATENT rricn.

FRANCIS M. HANKS AND HORACE N. SIBLEY, OF MIDWAY, LOUISIANA.

SHINGL E SAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 355,077, dated December 28, 1886.

Application filed June 18, 1886. Serial No. 205,546. (No model.)

To all whom it may concern.-

Be it it known that we, FRANCIS M. HANKS and HORACE N. SIBLEY, of Midway, in the parish of Bossier and State of Louisiana, have invented a new and useful Band-Saw Shingle- Machine, of which the following isa full, clear, and exact description.

Our present invention relates to the construction of a band-saw shingle-machine designed more especially for use in connection with a band-saw-such as the one described, illustrated, and claimed in Letters Patent N 0. 336,407, granted to us on the 16th day of February, 1886; but the machine could be used with'a single-toothed band-saw, although not to so great advantage as with adouble't'oothed saw.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar figures of reference indicate corresponding parts in all the figures.

Figure 1 is a front View of our improved band-saw shingle machine, the parts being broken away to disclose the construction. Fig. 2 is a side view of the machine. Fig. 3 is a sectional plan view of the machine with the reciprocating carriage removed. Fig. 4. is a sectional plan View of the carriage, taken on line w of Fig. 2. Fig. 5 is adetail view illustrating the construction of the crank-adjusting attachment. Fig. 6 is a sectional plan View taken on line y y of Fig. 2, and Fig. 7 is .a sectional elevation taken on line zz of Fig. 3.

In the drawings above referred to, 100 represents the main frame of the machine, in which frame we mount the saw supporting and driving wheels 10, said wheelsbeing mounted the one above and the other below a reciprocating carriage, 11, that is provided with wheels or rollers 12, which ride on tracks or ways 13, that are supported by sills 14, carried by the main frame 100. In the peripheral face of each of the supporting-wheels 10 there are arranged yieldingly-mounted pins 15, which enter correspondingly-formed apertures or guiding-holes 2, that are formed at equal-distances along the center line of the band-saw 20, so that the saw will be guided and held upon the upper transmitting-wheels 10, as is fully explained in our patent above referred to. The lower wheel 10 is rigidly mounted upon the main drivingshaft 16 of the machine, and this shaft 16 is driven by a belt that passes over a pulley, 17, fixed to one end of said shaft. The shaft 16 carries a pinion, 18, that engages with a gear, 19, carried by a shaft 21, that is mounted in bearings that are in about the same plane as those employed to carry an adj ustably-mounted shaft, 22, said shaft 22 being provided with a gear, 23, that is engaged and driven by a pinion, 24, that is carried by'the shaft 21. The outer box of the shaft 22 is adjustable, and is guided by arms 25, formedin a bracket,26, that is rigidly secured to the frame 100.

The bracket 26 is formed with a rearwardlyextending arm, 27, and to this arm there is pivotally connected a lever, 28, the short arm of which rests beneath the movable box or bearing of the shaft 22, upon the end of which shaft 22 there is a friction-pulley, 29, which bears against the under face of a disk, 30, that i is carried by a vertical shaft, 31, mounted in bearings 32, fixed to one end of the frame 100.

Upon the extending end of the long arm of the lever 28 there is a weight, 33, which may be adjusted along the length of the lever, and so vary the pressure between the friction pulley or roller 29 and the disk 30; but whenit is desired to lower the friction roller or pulley 29 from engagement with the under side of the disk 30 the extending end of the lever 28 is raised through the medium of a lever, 34, that is formed with a shoulder, 35,'which,when the lever 34 is thrown to a vertical position, will bear against the underside of the lever 28, and act to elevate the weight 33, thus permitting the movable end ofthe shaft 22 to drop, and thereby carry its pulley 29 from is arranged a set-screw, 43, connected by a swivel-joint with the block 36, and formed with an irregularly-shaped head, 44, adapted to fit within the socket of a crank-handle or key, so that the roller 39 may be adj usted toward or from the axis of the shaft 31, and thereby IOD decrease or lengthen thetravel of the carriage;; 11, for, from the construction described, litiwilll be seen that as the shaft 31 is rotated the carriage will be reciprocated-that is, driven backward and forward over the ways 13and it necessarily follows that the distancetraveled will be governed directly by theiength of the crank-arm.

The carriage 11 carries a frame, 50,inu w;hich there are mounted two lower series 'of'spur' rollers, 51, and two upper series of smaller spur-rollers, 52, said rollers being carried by shafts 53 and 54, respectively. A Thebearings of the shafts 53 are fixed; but the bearings of the shafts 54 are arranged in movable blocks 56, that, {are suspended from; theends of, rods, 57, Sflidi rods being .inturn connected, to ,leversp ,5 58, l mounted in brackets 59,. arranged; in {the upper parttof the: frame 50, .so that wheninec: 1 essary; the rollers; 52, may be elevated to, [pert 1 mil: oi; the introduction of the block from which: the; shingles .ane to 1 ,be .cut. .1; The I carriage; ,lL .carries two rollers, 60, that aremounteduponthe'ends of springs161, said springs, being cared: to the. main body of theicarriage, and; beingqpreferably of the form bestshownwin Fig.2. m inpimwhmm m 51111.;

'lhel rollers 60 serveto support therear ends of. the blocks to keep, them from saggi=ng,land these blocks, from which i the shingles; are to be cut, are placed upon, the, spur-rollers 51, t-heimllers 521being at this time lifted to permit; of the introduction of .the blocks but after the; :blocksihave been, placed, as described, the

spurrrollers52 are again lowered, so that they will {rest upon: ithesupper faces of the blocks thathaveibeenplaced as described.

Jnonder that the blocks may be fed forward, as desired, at each reciprocation of the car- 0 riage :11, we provide such a mechanism as will now be specifically described. To each side piece of the frame there is pivotally connected a lever, 70, each lever carrying two pawls, 71 and 72, which pawls engage with 5 double ratchet-wheels 73 and 74, that are rigidly secured upon the extending ends of the shafts 53 and 54. The teeth of the upper and lower ratchet-wheels are arranged in opposition, and as the upper pawls, 71, are formed 3 with catch-teeth 3, which act to pull against the teeth of the ratchet-wheel 74, while the pawls 72 are arranged to push against the teeth of the ratchets 73, it follows that when the levers are swung upon their pivotal connections 4 with the frame 50 the direction imparted to the spur-rollers 51 and 52 will be such as to feed the block forward both from above and below.

In order that the levers 70 may be recipro- 3 cated or rocked at each reciprocation of the carriage 11, we arrange them so that their lower ends extend downward through the platform of the carriage 11, and upon the lower ends of these levers we mount friction-rollers 5, which ride in S-shaped cam' grooves 80, that are formed upon the upper faces of the blocks 81, which blocks are carried by a horizontal and rotationimpartedto'th eshaift. i

In operating the machine'the length of the crank by which the carriage is reciprocated and the position of the blocks 81 is adjusted,

so that, although a shingle may be cut at each reciprocationof the carriage, the travel of the carriage will be only such as is required for the sawing of'the-shingle of the width of the block employed.

; In operation thei blocks from which the shingles are to, becut are, )lacediin the position describedwthat is,v to -fill the spaces A B betwcenthe two sets iof spurrrollers, the saw a this time b ing, abreast of the central dividingapartition, 90., The machine is then started forward in the direction of the arrow No. 1, (shown in,Fig. 1,) and a shingle or slab is sawedi from the block located at Bthat is, from the block farthestremoved from the roller 39,,said block being previously set so as to come within the line of the teeth of the saw 20. As the carriage advances in the direction of arrow No. 1 the roller 5,at the bottom of the forward lever, 70, enters its cam-groove 80,, and the lever 70 is thrown in the direction of the arrow shown in connection therewith in Fig. 2, thus causing the block to be thrown forward. When the carriage is driven back cated at A will be in the line of the teeth of the saw, and a slab or shingle will besawed therefrom, and while the saw is acting upon the block located at A the lever 7 0, arranged in connection with the spur-rollers, which hold the block at B, will, through the medium of its roller 5, be brought into engagement with the opposite cam-groove, 80, and the block located at B will be fed forward, and this operation is repeated indefinitely, the block at A being set while the block at B is in the path of the saw, and vice versa.

When it is desired to stop the reciprocating motion of the carriage 11,the lever 34is thrown in the direction of the arrow shown in Fig. 2, and the weighted end of the lever 28, being borne against by the shoulder35,will be raised and the friction-roller29 lowered from engage band-saw and its driving mechanism, of a reciprocating carriage carrying two sets of blockholders, two sets of set-works, and a mechanism, substantially as described, whereby one setof set-works is actuated to feed its block forward, while the block of the other set is operated upon by the saw, the same comprising levers with their lower ends actuated by oppositely-disposed cam-grooves, and which levers areveach provided with pawls acting oppositely upon ratchets applied to the spurroller shafts, substantially as described.

2. The combination, with a double-toothed band-saw and its driving mechanism, of a reciprocating carriage carrying two sets of spurrollers and supporting-rollers and alternatelyoperating mechanism for rotating the spurrollers, and mechanism for reciprocating the carriage, comprising a shaft carrying a disk engaging with thesaw-driving mechanism, and the crank-arnis connected to the said shaft and engaging a bracket of the reciprocating carriage, substantially as and for the purpose set forth.

3. The double-toothed band-saw, with its driving mechanism, the reciprocating carriage, carrying two sets of spur-rollers and supporting-rollers, the shaft carrying a disk enare each provided. with pawls acting oppositely upon ratchets applied to the shafts of the spur-rollers, substantially as and for the purpose set forth.

4. The combination, with a double-toothed bandsaw and its driving mechanism, of a reciprocating carriage carryingtwo sets of spurrollers, 51 and 52, and spring supporting-rollers 60, levers 70, pawls 71 and 72, and ratchetwheels 73 and '74, that are carried by the shafts of the spur-rollers 51 and 52,. camgrooves 80,-arranged in the paths of the lower ends of the levers 70, and formed upon the upper faces of the blocks 81, that are adjustably mounted on a shaft, 84, and a mechanism, substantially as described, whereby a recipro-' eating-motion is imparted to the carriage, as and for the purpose specified.

5. The combination, with a band-saw and a reciprocating carriage carrying set-works,

substantially as described, of a mechanism for imparting a reciprocating motion to the carriage, consisting, essentially, of avertical shaft carrying a disk, 30, that is engaged by a friction roller or pulley, 29, crank-arms 38, and an adjusting-screw, 43, the crank-arms being provided with aroller, 39, that enters a groove formed ina bracket, 41, that is secured to the carriage, substantially as described.

' FRANCIS M. HANKS.

HORACE N. SIBLEY. Witnesses:

THos. N. BRADEN, T. B. KELLY. 

